User's Manual

14-8
Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 14 Configuring VTP
Configuring VTP
• If you do not configure the persistent MAC address feature (by entering the stack-mac persistent
timer [0 | time-value] global configuration command, when the new master is elected, it sends a
takeover message with the new master MAC address as the primary server.
• If persistent MAC address is configured, the new master waits for the configured stack-mac
persistent timer value. If the previous master switch does not rejoin the stack during this time, then
the new master issues the takeover message.
For more information about the switch stack, see Chapter 5, “Managing Switch Stacks.”
Configuring VTP
These sections contain this configuration information:
• Default VTP Configuration, page 14-8
• VTP Configuration Guidelines, page 14-8
• Configuring VTP Mode, page 14-11
• Enabling the VTP Version, page 14-14
• Enabling VTP Pruning, page 14-15
• Configuring VTP on a Per-Port Basis, page 14-15
• Adding a VTP Client Switch to a VTP Domain, page 14-16
Default VTP Configuration
Table 14-2 shows the default VTP configuration.
VTP Configuration Guidelines
You use the vtp global configuration command to set the VTP password, the version, the VTP file name,
the interface providing updated VTP information, the domain name, and the mode, and to disable or
enable pruning. For more information about available keywords, see the command descriptions in the
command reference for this release. The VTP information is saved in the VTP VLAN database. When
Table 14-2 Default VTP Configuration
Feature Default Setting
VTP domain name Null.
VTP mode (VTP version 1 and version 2) Server.
VTP mode (VTP version 3) The mode is the same as the mode in VTP version 1 or 2
before conversion to version 3.
VTP version Version 1.
MST database mode Transparent.
VTP version 3 server type Secondary.
VTP password None.
VTP pruning Disabled.